CVE-2017-8900

Description

LightDM through 1.22.0, when systemd is used in Ubuntu 16.10 and 17.x, allows physically proximate attackers to bypass intended AppArmor restrictions and visit the home directories of arbitrary users by establishing a guest session.

4.6

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.07%

Vendor Advisory launchpad.net Vendor Advisory canonical.com Vendor Advisory ubuntu.com

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/bid/98554	vdb entry third party advisory
https://www.ubuntu.com/usn/usn-3285-1/	patch vendor advisory
https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html	patch vendor advisory
https://launchpad.net/bugs/1663157	issue tracking patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-8900?: CVE-2017-8900 has been scored as a medium severity vulnerability.
How to fix CVE-2017-8900?: To fix CVE-2017-8900, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-8900 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-8900 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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